JPH10271237A - Terminal equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the storage capacity of a data storage means and to easily remotely confirm a character message data. SOLUTION: When an incoming call is detected, a switch 109 is turned on to automatically respond. A DTMF(dual tone multiple frequency) signal as character message data sent from the other party of connection is demodulated by a demodulator 112 to obtain a 4-bit DTMF signal code, and this code is written in a RAM 115 as character message data. In this case, a DTMF signal code indicating the present time is added to each message to write it. A DTMF signal code indicating the number of character messages is also written in the RAM 115. When a transmission request command of character message data of a prescribed message is transmitted from the other party, a control part 101 reads out a DTMF signal code as character message data of the prescribed message from the RAM 115 and supplies it to a DTMF modulator 113 and converts it into a DTMF signal and transmits this DTMF signal to the requesting other party.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a terminal device such as a telephone. More specifically, character message data sent in the form of a DTMF signal via a line is written in the data storage means in the form of a DTMF signal code, and when a transmission request command is sent, a predetermined character is sent from the data storage means. DTMF as message data
The signal code is read out, and this DTMF signal code is
The present invention relates to a terminal device capable of reducing the storage capacity of data storage means by converting to an MF signal and transmitting the converted signal to a line, and which can easily confirm character message data by remote control.

[0002]

2. Description of the Related Art In a paging service (wireless paging service) and the like, a DTMF (Dual Tone Multiple Frequenc) is used.
y) The text message data is transmitted to the other party by a signal. In this case, one DTMF signal code or a combination of two or more DTMF signal codes is associated with characters, numerals, symbols, and the like (hereinafter, simply referred to as “characters”) in advance, and a DTMF signal corresponding to a character message is transmitted. By transmitting the text message data to the other party, the other party can reproduce the text message from the DTMF signal code obtained by demodulating the DTMF signal.

[0003]

Conventionally, character message data transmitted as described above is held in a memory, for example, in the form of a character code. However, there has been no method capable of remotely reading out the character message data held in the memory by the character code and confirming the character message.

Accordingly, an object of the present invention is to provide a terminal device which requires a small storage capacity of data storage means and can easily confirm character message data by remote control.

[0005]

SUMMARY OF THE INVENTION A terminal device according to the present invention detects line reception, automatically responds, and stores line control means for connecting a line with a partner and character message data. DTMF demodulation means for demodulating a DTMF signal transmitted by a line to obtain a DTMF signal code, and storing the DTMF signal code as character message data obtained by the DTMF demodulation means in the data storage means. Data write control means for writing, command detection means for detecting a command sent by a line, and when a character message data transmission request command is detected by the command detection means, a predetermined DTMF signal code is read from the data storage means. Data read control means, and DTMF read from the data storage means. In which and a DTMF modulating means for sending to the line by converting No. code DTMF signal.

Further, the terminal device according to the present invention includes a calling unit for connecting a line with a specific partner, a data storage unit for writing character message data, and a line with the partner. Command transmission means for transmitting a character message data request command to the line after the transmission, DTMF demodulation means for demodulating a DTMF signal transmitted by the line to obtain a DTMF signal code, and character message data obtained by the DTMF demodulation means. DTMF
Data writing control means for writing a signal code to the data storage means, and display means for displaying a character message based on the DTMF signal code written in the data storage means.

[0007] For example, a fixed terminal device automatically responds to an incoming call to connect a line with the other party. And
The DTMF signal sent from the other party via the line is demodulated to obtain a DTMF signal code as character message data, and the DTMF signal code is written and stored in data storage means. For example, a DTMF signal code as character message data is written in the data storage means for each case separated by the terminal code, and a DTMF signal code indicating the number of character messages is also written in this data storage means. Further, when writing a DTMF signal code as character message data of each case, for example, a DTMF signal code indicating the current time is added to the end of each of the DTMF signal codes and written.

Further, a line is connected to the fixed terminal device by making a call from, for example, a portable terminal device for confirming a text message by remotely operating the fixed terminal device. After the line is connected, a password indicating that remote control is to be performed is transmitted from the portable terminal device to the line. When the fixed terminal device detects the above-mentioned password, the fixed terminal device is ready to detect the command transmitted by the line, and the DTMF indicating the number of text messages from the data storage means.
The signal code is read out, and this DTMF signal code is
The signal is converted to an MF signal and transmitted to the line. The portable terminal device obtains a DTMF signal code from the DTMF signal, and displays the number of text messages on a display means such as a liquid crystal display using the DTMF signal code.

Then, a character message data request command is transmitted from the portable terminal device to the line. This command and the above-mentioned password are transmitted to the line in the form of, for example, a DTMF signal. The fixed terminal device detects this command, reads out the DTMF signal code as character message data of the subject designated by the command from the data storage means, converts this DTMF signal code into a DTMF signal, and sends it out to the line. Thereby, the portable terminal device demodulates the DTMF signal transmitted through the line and
A signal code is obtained, the DTMF signal code is written into the data storage means, and a character message (including time) based on the DTMF signal code is displayed on the display means automatically or in response to a user operation.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a fixed terminal device 100 connected to a telephone line.

The fixed terminal device 100 includes a microcomputer, and includes a control unit 101 for controlling the operation of the entire system, an operation unit 102 for receiving various key operations by the user, and a liquid crystal display (LCD). A display unit 10 configured by a display unit or the like for displaying a system state or a text message sent as described later;
And 3. Operation unit 102 and display unit 103
Are connected to the control unit 101.

The fixed terminal device 100 has terminals 104a and 104b for telephone line connection and terminals 104a and 104b.
An incoming call detection unit 106 and a line disconnection detection unit 107 are connected to 104b via a DC cut capacitor 105. The incoming call detection unit 1106 detects an incoming call by detecting a 16 Hz ringing signal supplied intermittently from the exchange, and the incoming call detection signal output from the incoming call detection unit 106 is supplied to the control unit 101.

In the case of a line disconnection by the calling side, a 400 Hz continuous signal (dial tone signal) or a 400 Hz intermittent signal (busy tone signal) is sent from the exchange, or a silent state occurs. Line disconnection detector 10
In 7, the line disconnection is detected by detecting any of the above-described states, and the line disconnection detection signal output from the line disconnection detection unit 107 is supplied to the control unit 101.

The fixed terminal device 100 includes a two-wire to four-wire conversion circuit 108 for performing two-wire to four-wire conversion while maintaining impedance matching with the line side, and terminals 104a and 104.
and a connection switch 109 for starting (off-hook) and restoring (on-hook) the exchange. The operation of the connection switch 109 is controlled by the control unit 101.

The fixed terminal device 100 includes a conversion circuit 1
08, a low-frequency amplifier 110 connected to the 4-wire side (reception) for amplifying an audio signal transmitted by the line, a speaker 111 for outputting audio based on the audio signal output from the amplifier 110, DTM connected to the 4-wire side (reception) of circuit 108 and sent by the line
A DTMF demodulator 112 for demodulating the F signal to obtain a 4-bit (1 nibble) DTMF signal code. D
The DTMF signal code obtained by the TMF demodulator 112 is supplied to the control unit 101.

The fixed terminal device 100 includes a control unit 10
1 is converted to a DTMF signal and supplied to the 4-wire side (transmission) of the conversion circuit 108.
It has a DTMF modulator 113 as TMF sending means. The control unit 101 includes a ROM (read only memory) in which an operation program of the microcomputer, a conversion format for converting the DTMF signal code into a character code, a DTMF signal code as response message data, and the like are written. ) 114,
RAM for storing DTMF signal codes and the like as character message data obtained by DTMF demodulator 112
(Random access memory) 115 and D indicating the current time
And a clock unit 116 for generating a TMF signal code.

The DTMF modulator 113 has DTMF as response message data for prompting the input of a character message read from the ROM 114, if necessary.
A DTMF signal code as a signal code or character message data (including time data) read from the RAM 115 is supplied and converted into a DTMF signal.

Next, using the flowchart of FIG.
The control unit 1 when the above-mentioned fixed terminal device 100 receives an incoming call
01 will be described.

At step ST1, it is determined whether or not an incoming call is detected by the incoming call detection unit 106. If an incoming call is detected, at step ST2, the connection switch 109 is turned on, that is, a response is made as an off-hook state. Connect with the line. Next, in step ST3, the DTMF signal code as the above-described response message data is read from the ROM 114 and supplied to the DTMF modulator 113. As a result, the DTMF modulator 113 converts the DTMF signal code as response message data into a DTMF signal, and the DTMF signal is transmitted to the line via the conversion circuit 108.

Next, in step ST4, reception of a text message is started. Then, in step ST5, it is determined whether a predetermined time has elapsed since the start of the reception of the text message, or whether the line disconnection detection unit 107 has detected the disconnection of the line. If the predetermined time has not elapsed since the start of the reception of the text message, and if the disconnection of the line has not been detected, the process proceeds to step ST6.
It is determined whether a TMF signal has been received. When a DTMF signal is received, the DTMF demodulator 112 outputs a DTMF signal.
A signal code is obtained, and the DTMF signal code is supplied to the control unit 101. If no DTMF signal has been received, the process returns to step ST5. When receiving the DTMF signal, the DTMF signal is supplied from the conversion circuit 108 to the speaker 111 via the amplifier 110, and the speaker 111 outputs a sound based on the DTMF signal.

If a DTMF signal is received in step ST6, the DTMF demodulator 1
It is determined whether or not the DTMF signal code obtained from step 12 corresponds to a password indicating that remote control is to be performed.
If it corresponds to the password, remote control processing is performed in step ST8. On the other hand, if it does not correspond to the password, in step ST9, the DTMF signal code obtained from the DTMF demodulator 112 is assumed to be character message data, and the DTMF signal code is converted into character data. Displays text messages sequentially.

Then, in step ST10, it is determined whether or not the DTMF signal code obtained from the DTMF demodulator 112 is a terminal code, for example, indicating "#". If it does not indicate the terminal code, the process returns to step ST5. On the other hand, if it indicates the terminal code, in step ST11, the DTMF signal code immediately before the terminal code is written into the RAM 115 as one character message data, and thereafter, the process returns to step ST4 to return to the next character string. Start accepting messages.

As described above, the DTMF signal code as character message data is written in the RAM 115 for each case separated by the terminal code. For example, R
In the AM 115, writing areas for n, for example, 10 character message data are set, and new character message data is sent when character message data has already been written in all areas. The oldest text message data is erased, and new text message data is written instead. If the text message data has already been written in all the areas, the response message transmitted in step ST3 may be a message indicating that the text message cannot be input.

In the RAM 115, an area for writing character message count data is set, and in step ST11, the DTMF signal code as the text message count data written in the area is updated in step ST11. (See FIG. 3). In this case, the text message number data is sequentially incremented each time one text message data is written to the RAM 115 until the text message number becomes n.

In step ST11, when the DTMF signal code as the character message data is written in the character message data writing area of the RAM 115, the DTMF signal code indicating the current time generated by the clock unit 116 is written. Is also added and written. In that case, DTMF as character message data
It is added to the end of the signal code and written (see FIG. 3). Thus, when the DTMF signal code is read from the RAM 115 as the character message data, the DTMF signal code is read as the current time data.

It is to be noted that the writing area of each character message data in the RAM 115 can be selectively erased by remote operation through a line or key operation of the operation unit 102, and the rewriting of the character message number data is automatically performed with the erasure. It is done on a regular basis. In addition, a DTMF signal as character message data is read out from the RAM 115 for each case by a key operation of the operation unit 102, and the DTMF signal is read out.
The signal code is converted into character data, and the character message of each case can be displayed on the display unit 103 and confirmed.

In step ST5, when a predetermined time has elapsed from the start of receiving the character message data, or when the line disconnection is detected by the line disconnection detecting unit 107, the connection switch 109 is turned off in step ST12.
In other words, disconnect the line with the other party in the on-hook state,
In step ST13, a standby state is set.

FIG. 4 shows the fixed terminal device 10 described above.
To send a text message to the
Mobile phone (PHS: Personal Handyphon) that can remotely confirm text message data written in
e System) 200 is shown.

The telephone 200 includes a microcomputer, a control unit 201 for controlling the entire system, a transmitting / receiving antenna 202, and a receiving signal of a predetermined frequency captured by the antenna 202. Convert to π / 4 shift QPSK (Quadrature P
hase Shift Keying) signal and a radio section 203 for up-converting a π / 4 shift QPSK signal output from a digital modulation / demodulation section to be described later to obtain a transmission signal of a predetermined frequency. The π / 4 shift QPSK signal is demodulated to obtain received data, and TDMA (Time Division Mu
and a digital modulation / demodulation unit 204 for performing a modulation process on transmission data output from the ltiple access (processing unit) to obtain a π / 4 QPSK signal.

Telephone 200 selects preset downlink slot data from received data (time-division multiplexed data of a plurality of slots) output from digital modulation / demodulation section 204 and separates the data into control data and compressed voice data. Also, TDMA for multiplexing compressed audio data output from an audio codec unit described later and control data output from the control unit 201 into a preset uplink slot.
It has a processing unit 205.

The telephone 200 is provided with a TDMA processing unit 2.
In addition to performing decoding processing (including error correction processing) on the compressed audio data output from the receiver 05 to obtain a received audio signal, compression encoding processing (addition of an error correction code is also performed on the transmission audio signal). Audio codec section 206 for obtaining compressed audio data, a low-frequency amplifier 207 for amplifying a received audio signal output from the audio codec section 206, and outputting an audio based on an audio signal output from the amplifier 207. A speaker 208 serving as a receiver for receiving a voice signal, and a received voice signal output from the voice codec unit 206 having a DT
If it is an MF signal, the DTMF signal is demodulated to obtain a 4-bit (1 nibble) DTMF signal code.
And a demodulator 209. In this case, the DTMF signal code obtained by the DTMF demodulator 209 is
Supplied to

The telephone 200 includes a microphone 211 as a transmitter, a low-frequency amplifier 212 for amplifying an audio signal output from the microphone 211, and a DTMF signal code supplied from the control unit 201.
A DTMF modulator 213 as DTMF transmitting means for converting the signal into a signal;
A changeover switch 214 for selectively extracting an output DTMF signal from the MF modulator 213 and supplying the DTMF signal to the audio codec unit 206 as a transmission audio signal.

In this case, the output side of the amplifier 212 is connected to the fixed terminal on the a side of the changeover switch 214, and the output side of the DTMF modulator 213 is connected to the fixed terminal on the b side. The changeover switch 214 is controlled by the control unit 201, and is connected to the side b when transmitting text message data to the above-described fixed terminal device 100 or remotely controlling the above-described fixed terminal device 100, and performs other calls and the like. If so, it is connected to the a side.

The telephone 200 has an operation unit 215 for the user to perform various key operations, a display unit 216 composed of a liquid crystal display and the like, and a non-volatile memory for storing redial data, telephone directory data and the like. And a ring tone output unit 218 that outputs a ring tone under the control of the control unit 201 when an incoming call is received. The operation unit 215, display unit 216, nonvolatile memory 217, and ringer output unit 218 are connected to the control unit 201, respectively.

Here, the operation unit 215 includes a call key for instructing a call or answering an incoming call, a call end key for ending a call, a call mode, a text message transmission mode, a remote operation mode, A function key for changing modes such as a telephone directory registration mode, a numeric keypad for inputting a telephone number, a password, a text message, and the like are provided. The display unit 216 displays the status of the system,
Redial data and phonebook data selected in the search for redial data and phonebook data, telephone numbers entered using the numeric keypad, and text message count data transmitted from the fixed terminal device 100 during remote operation. A text message or the like based on text message data is displayed.

The control unit 201 includes a ROM 219 in which an operation program of the microcomputer, a conversion format for converting a DTMF signal code into a character code, and the like, and a character obtained by the DTMF demodulator 209, which are not described above. DTM as message data
A RAM 220 for writing an F signal code and the like.

Next, the operation of the telephone 200 shown in FIG. 4 will be described.

When the power is turned on, the control channel is out of synchronization with the control channel. Therefore, the control channel transmitted from the base station is received and the synchronization with the control channel is established. Thereafter, location registration that the user is in the area of the base station is performed. This location registration is performed using the communication channel, and after the location registration is completed, the mobile station returns to the control channel receiving state and enters the standby state.

First, the case where the communication mode is set and the changeover switch 214 is connected to the a side will be described. In this case, for example, if the call key is operated after the telephone number of the other party is input by operating the key of the operation unit 215, a calling process is performed. That is, telephone number data and the like are supplied as control data from the control unit 201 to the TDMA processing unit 205 and transmitted to the base station through a control channel. As a result, the line connection with the other party is established, and a call is made possible.

Here, the communication is performed using the communication channel. At the time of the line connection processing, the communication frequency and the slot position data of the communication channel are transmitted as control data from the base station using the control channel, and the TDMA processing is performed. The data is supplied from the unit 205 to the control unit 201. Control unit 201
Controls the radio unit 203 based on the communication frequency data so that the transmission / reception frequency matches the communication frequency of the communication channel, and sets the TD based on the slot position data.
The slot selected by the MA processing unit 205 is set. Therefore, the call is made using the call channel notified from the base station.

Further, paging data is transmitted as control data from the base station using the control channel, and this paging data is supplied from the TDMA processing unit 205 to the control unit 201, and when the incoming call is detected, the control unit 201 The ringing tone output unit 218 is controlled to output a ringing tone.

While this calling operation is being performed,
When the call key is operated and there is a response, the response data is supplied from the control unit 201 as control data to the TDMA processing unit 205 and transmitted to the base station via the control channel. As a result, the line connection with the other party is established, and a call is made possible. Also in this case, the communication is performed using the communication channel notified from the base station.

In the talking state, the compressed voice data transmitted through the talking channel is output from the TDMA processing unit 205. The compressed audio data is supplied to the audio codec unit 206 and subjected to a decoding process, and then converted into an analog signal. Then, the received audio signal output from the audio codec section 16 is transmitted to the speaker 208 via the amplifier 207.
And the speaker 208 outputs a sound based on the received sound signal.

The transmission audio signal output from the microphone 211 is amplified by the amplifier 212, supplied to the audio codec 206, converted into a digital signal, and then compression-encoded to form compressed audio data. . Then, the compressed audio data output from the audio codec unit 206 is supplied to the TDMA processing unit 205, and is transmitted to the other party through the communication channel.

Next, the case where the character message transmission mode is set and the changeover switch 214 is connected to the b side will be described with reference to the control sequence diagram of FIG. In this case, for example, if the call key is operated after inputting the telephone number of the fixed terminal device 100 by the key operation of the operation unit 215, a calling process is performed in the same manner as in the above-described call mode (step ST21), and the fixed terminal device 100 Is connected, and the character message transmission is enabled. In this case, the fixed terminal device 100 responds to the call from the telephone 200 in step ST31 by turning on the connection switch 109, that is, responding as an off-hook state to connect the line with the telephone 200, and then in step ST32, Response message data prompting input of text message data is transmitted to telephone 200 in the form of a DTMF signal, and in step ST33, reception of text messages is started.

In step ST22, the telephone 200 receives the DTMF signal as response message data transmitted from the fixed terminal device 100, and receives the DTMF signal from the DTMF demodulator 20.
9, a DTMF signal code corresponding to the DTMF signal is obtained. As a result, the control unit 201 sets the DTMF
The signal code is converted into a character code and displayed on the display unit 216.
To display the response message.

In this state, when the user operates the numeric keypad or the like of the operation unit 215 to input a text message in step ST23, a DTMF signal code corresponding to the operated key is transmitted from the control unit 201 to the DTMF modulator 213. The DTMF signal code is converted into a DTMF signal and supplied to the audio codec unit 206. As a result, the text message data is transmitted from telephone 200 to fixed terminal device 100. In this case, a terminal code, for example, “#” is transmitted at the end of the text message data of each case. In this case, the fixed terminal device 100 receives a DTMF signal as character message data, obtains a DTMF signal code corresponding to the DTMF signal from the DTMF demodulator 112, and converts the DTMF signal code into a character code in step ST34. , A text message is displayed on the display unit 103. Further, in step ST35, D output from the DTMF demodulator 112 is
RAM with TMF signal code as character message data
Write it to 115 and store it.

After transmitting the predetermined text message data, the telephone set 200 operates the user's operation unit 215.
In step ST24, for example, a line disconnection process is performed, and in step ST25, a standby state is established. The fixed terminal device 100 disconnects the line by turning off the connection switch 109 in step ST36 in response to the line disconnection process by the telephone 200.
At 7, a standby state is set.

Next, the case where the remote control mode is set and the changeover switch 214 is connected to the b side will be described with reference to the control sequence diagram of FIG. In this case, for example, the key operation of the operation unit 215 causes the fixed terminal device 10 to operate.
When the call key is operated after inputting the telephone number 0, a calling process is performed (step ST41), and the fixed terminal 1
The line between 00 and 00 is connected. in this case,
In step ST51, the fixed terminal device 100 responds to the call from the telephone 200 by turning on the connection switch 109, that is, in the off-hook state.
Then, in step ST52, the response message data prompting the input of the text message data is
Send to the telephone 200 in the form of a TMF signal, and
At T53, the reception of the text message is started.

In the telephone 200, in step ST42,
The DTMF demodulator 2 receives a DTMF signal as response message data transmitted from the fixed terminal device 100.
From 09, a DTMF signal code corresponding to the DTMF signal is obtained. As a result, the control unit 201 transmits the DTM
The F signal code is converted into a character code, and the display unit 21
6 displays a response message.

In this state, when the user operates the numeric keypad or the like of the operation unit 215 to input a password indicating that remote control is to be performed, a DTMF signal code corresponding to the operated key is transmitted from the control unit 201 to the DTMF modulator. The DTMF signal code is converted to a DTMF signal and supplied to the audio codec unit 206. This allows
A DTMF signal as a personal identification number is transmitted from telephone 200 to fixed terminal device 100 (step ST43).

In this case, the fixed terminal device 100 receives the DTMF signal as the personal identification number, and
12, a DTMF signal code corresponding to the DTMF signal is obtained. In step ST54, it is determined whether or not the DTMF signal code indicates a password. If the DTMF signal code does not indicate a password, the process proceeds to step ST55 to perform processing other than the remote control processing. On the other hand, if it is a password, the DTMF signal code as character message count data is read from the RAM 115 in step ST56, and the DTMF signal code is converted into a DTMF signal by the DTMF modulator 113 and supplied to the conversion circuit 108. Is done. As a result, the fixed terminal device 100 transmits the DTMF signal as text message count data to the telephone 200.

In the telephone 200, in step ST44,
A DTMF signal as character message count data transmitted from the fixed terminal device 100 is received, and a DTMF demodulator 209 obtains a DTMF signal code corresponding to the DTMF signal. As a result, the control unit 201
The TMF signal code is converted into a character code, and the number of character messages is displayed on the display unit 216.

In this state, when the user operates the operation unit 215 to request transmission of predetermined (partial or all) character message data, the DTMF signal code corresponding to the transmission request command is changed. D from the control unit 201
The DTMF signal is supplied to the TMF modulator 213, and the DTMF signal code is converted into a DTMF signal.
Supplied to As a result, a DTMF signal as a transmission request command for the predetermined character message data is transmitted from telephone 200 to fixed terminal device 100 (step ST45).

In this case, the fixed terminal device 100 receives the DTMF signal as the transmission request command of the predetermined character message data, and the DTMF demodulator 112 obtains the DTMF signal code corresponding to the DTMF signal. As a result, a transmission request command for the predetermined character message data is supplied to the control unit 101. for that reason,
D as predetermined character message data (including the current time data added at the end) from the RAM 115
The TMF signal code is read out, and a terminal code, for example, a DTMF signal code corresponding to “#” is added at the end of each case, and is supplied to the DTMF modulator 113. The DTMF modulator 113 controls the control unit 10.
DTM corresponding to the DTMF signal code supplied from 1.
The F signal is output and supplied to the conversion circuit 108. As a result, the fixed terminal device 100 transmits a DTMF signal as text message data of a predetermined case to the telephone 200 (step ST57).

The telephone 200 receives a DTMF signal as character message data of a predetermined item transmitted from the fixed terminal device 100, and a DTMF demodulator 209 obtains a DTMF signal code corresponding to the DTMF signal. Then, a DTMF signal code as character message data is written and stored in the RAM 220 for each case, and the DTMF signal code is sequentially converted into a character code and displayed on the display unit 216 (step ST4).
6). In this case, when there are a plurality of cases, only the first case is displayed on the display unit, and other cases are displayed after the user operates the operation unit 215.

Thereafter, the telephone 200 performs, for example, step ST47 based on the key operation of the operation unit 215 by the user.
Then, a line disconnection process is performed, and in step ST48, a standby state is established. The fixed terminal device 100 includes a telephone 200
In response to the line disconnection processing by
The connection switch 109 is turned off to disconnect the line, and in step ST59, a standby state is set.

In the remote operation according to the control sequence diagram of FIG. 6, a request for transmitting a predetermined character message data is shown. However, a maximum of ten character messages are stored in the fixed terminal device 100 without being described above. If the number of text messages is 6 or more and it is desired to request all text messages, the transmission request for text message data is divided into the first five and the remaining text messages based on the storage capacity of the RAM 220 of the telephone 200. It can be carried out.

Next, with reference to the control sequence diagram of FIG. 7, a description will be given of a case where the transmission request of the character message data is divided into the first five cases and the remaining cases.

A description will be given after the number of text messages is displayed on the display unit 216 of the telephone 200 in step ST44. The operation before that is the same as the operation in the control sequence diagram of FIG.

In the telephone 200, when the user operates the operation unit 215 while the number of text messages is displayed on the display unit 216 and a transmission request of the first five text message data is made, the transmission request is transmitted. The DTMF signal code corresponding to the command is transmitted from the control unit 201 to the DTMF signal code.
Modulator 213, and its DTMF signal code is D
The signal is converted into a TMF signal and supplied to the audio codec unit 206. Thereby, the DTMF signal as the transmission request command of the first five character message data is transmitted to the telephone 2.
00 to the fixed terminal device 100 (step S
T61).

In this case, the fixed terminal device 100 receives the DTMF signal as the transmission request command of the first five character message data, and the DTMF demodulator 112 obtains the DTMF signal code corresponding to the DTMF signal. Thereby, the transmission request command of the first five character message data is supplied to the control unit 101. Therefore, the first five character message data from the RAM 115 (including the current time data added at the end)
DTMF signal code is read out, and a terminal code, for example, a DTMF signal code corresponding to “#” is added to the end of each case, and the DTMF modulator 113
Supplied to Then, a DTMF signal corresponding to the DTMF signal code supplied from the control unit 101 is output from the DTMF modulator 113 and supplied to the conversion circuit 108. As a result, the telephone 20
DTM as the first five character message data in 0
An F signal is transmitted (step ST71).

The telephone 200 receives the DTMF signal as the first five character message data sent from the fixed terminal device 100, and the DTMF demodulator 209 obtains a DTMF signal code corresponding to the DTMF signal. Then, a DTMF signal code as character message data is written and stored in the RAM 220 for each case, and the DTMF signal code is sequentially converted into a character code, and the character message data is displayed on the display unit 216 (step ST62). In this case, the display unit 21
6, only the first case is displayed, and the second and subsequent cases are displayed after the user operates the operation unit 215. As will be described later, a request for transmission of the remaining character message data is made, and when there is transmission of the character message data, R
AM220 is overwritten. Therefore, the user needs to display and confirm the second and subsequent cases on the display unit 216 before requesting the transmission of the remaining text message data.

Thereafter, in the telephone 200, when the user operates the operation unit 215 to request transmission of the remaining text message data, the same as the first five transmission requests, A DTMF signal as a transmission request command for character message data
0 to the fixed terminal device 100 (step ST
63). Correspondingly, the control unit 101 of the fixed terminal device 100 is supplied with a transmission request command for the remaining character message data. As a result, the DTMF signal is transmitted from the fixed terminal device 100 to the telephone 200 in the same manner as when the first five transmission request commands are supplied (step S).
T72).

The telephone 200 receives the DTMF signal as the character message data of the remaining sent from the fixed terminal device 100, and the DTMF demodulator 209 obtains a DTMF signal code corresponding to the DTMF signal. Then, a DTMF signal code as character message data is written and stored in the RAM 220 for each case, and the DTMF signal code is sequentially converted into a character code, and the character message data is displayed on the display unit 216 (step ST64). In this case, the display unit 216
, Only the first case is displayed, and the second and subsequent cases are displayed after the user operates the operation unit 215.

After that, the telephone 200 performs, for example, step ST65 based on the key operation of the operation unit 215 by the user.
Then, a line disconnection process is performed, and in step ST66, a standby state is established. The fixed terminal device 100 includes a telephone 200
In step ST73, corresponding to the line disconnection process by
The connection switch 109 is turned off to disconnect the line, and in step ST74, a standby state is set.

Note that, even if not described above, the telephone 200 transmits a personal identification number to enable the remote operation of the fixed terminal device 100, and then requests deletion (clear) of character message data for each case or collectively. Can be done. In response to the deletion of the text message data, the text message count data in the RAM 115 is updated. When all text messages are deleted, the text message count data indicates 0.

As described above, in the present embodiment, character message data is written and stored in the RAM 115 of the fixed terminal device 100 in the form of a DTMF signal code, and is represented by a voice message or a code represented by a JIS character code or the like. Compared to storing characters, RAM 11
5 has the advantage of requiring less storage capacity. This is a telephone 20 that also stores text message data.
The same can be said for the RAM 220 of 0. In addition, the telephone 20
When the transmission request command of the character message data is supplied from 0, the fixed terminal device 100 only needs to convert the DTMF signal code as the character message data read from the memory 115 into a DTMF signal and send it to the line. Confirmation of data by remote operation can be easily performed.

Further, when the character message data is stored, the received DTMF signal is converted into a DTMF signal code and stored, and at the time of transmission, a DTMF signal is newly generated based on the stored DTMF signal code. , Omissions, etc. are reduced.

The fixed terminal device 100 has a RAM 11
When writing a DTMF signal code as character message data for each case, a DTTM indicating the current time is given to each of them.
Since the F signal code is added and written, the character message based on the character message data of each case written in the RAM 115 is displayed on the display unit 103 of the fixed terminal device 100 or the display unit 216 of the telephone 200 by remote control for confirmation. In this case, the user can easily know the input time of each text message.

The fixed terminal device 100 has a RAM 11
When writing the DTMF signal code as the text message data of each case into the RAM 5, the DTMF signal code indicating the number of text messages is sequentially updated and written into the RAM 115. For example, the personal identification number is transmitted from the telephone 200 to the fixed terminal device 100. When the remote operation is performed by the user, the DTMF signal as the text message number data is transmitted to the fixed terminal device 1.
00, the number of text messages is displayed on the display unit 216 of the telephone 200. As a result, the user can efficiently make a request for transmission or deletion of character message data using telephone 200.

The fixed terminal device 100 is
When the line is connected by a call such as 0, a response message is transmitted to the telephone 200 or the like in the form of a DTMF signal, and the response message is displayed in characters on the telephone 200 or the like. The advantage is that a speech synthesizer for the message is not required.

In the remote operation according to the control sequence diagram shown in FIG. 7, the telephone 200 receives the first five character message data and stores them in the RAM 220. The display unit 216
The line remains connected while it is displayed and checked in,
The line connection fee is wasted. Then, the first five character message data are sent,
It is conceivable that the line is disconnected after being stored in, and then the line is connected again when the transmission request for the remaining character message data is made next. The operation in such a case will be described with reference to the control sequence diagram of FIG.

At step ST62, the RA of telephone 200 is
A description will be given after the first five character message data sent from the fixed terminal device 100 are written in M220. The operation before that is the same as the operation in the control sequence diagram of FIG.

After writing the first five character message data into RAM 220, telephone 200 immediately disconnects the line in step ST81, and executes step ST81.
At 82, a standby state is set. Fixed terminal device 100
Corresponds to the line disconnection process by the telephone set 200, in step ST91, the connection switch 109 is turned off to disconnect the line, and in step ST92, the telephone enters a standby state.

With the line disconnected, the user of the telephone set 200 can sequentially confirm the character messages based on the character message data of each case written in the RAM 220 on the display unit 216 (step ST83). Then, after confirming the first five text messages, if the call key is operated after inputting the telephone number of fixed terminal device 100 by key operation of operation unit 215, a calling process is performed (step ST84). , And the line to the fixed terminal device 100 is connected.

In this case, in step ST93, the fixed terminal device 100 responds to the call from the telephone 200 by turning on the connection switch 109, that is, in the off-hook state, and connects the line with the telephone 200. In ST94, response message data for prompting input of character message data is transmitted in the form of DTMF signal to telephone 200.
, And in step ST95, the reception of a text message is started.

In the telephone 200, in step ST85,
The DTMF signal as response message data transmitted from the fixed terminal device 100 is received, and the response message is displayed on the display unit 216. Then, in this state, when the user operates the numeric keypad or the like of the operation unit 215 to input a password indicating that the remote operation is to be performed, the telephone 200 transmits a DTMF signal as a password to the fixed terminal device 100 ( Step ST86).

In this case, the fixed terminal device 100 receives the DTMF signal as the personal identification number, and
12, a DTMF signal code corresponding to the DTMF signal is obtained. In step ST96, it is determined whether or not the DTMF signal code indicates a password. If the DTMF signal code does not indicate a password, the process proceeds to step ST97 to perform processing other than the remote control processing. On the other hand, if the password is the password, it is determined in step ST98 whether or not a predetermined time has elapsed since the last remote operation. If it is not within the predetermined time, normal remote control processing is performed in step ST99. On the other hand, if the time is within the predetermined time, step ST10
0, the DTMF signal code as the remaining character message data is read out from the RAM 115 and
The signal is converted to an MF signal and transmitted to telephone 200.

The telephone 200 receives the DTMF signal as the character message data of the remaining sent from the fixed terminal device 100, and the DTMF demodulator 209 obtains the DTMF signal code corresponding to the DTMF signal. Then, a DTMF signal code as character message data is written and stored in the RAM 220 for each case, and the DTMF signal code is sequentially converted into a character code, and the character message data is displayed on the display unit 216 (step ST87). In this case, the display unit 216
, Only the first case is displayed, and the second and subsequent cases are displayed after the user operates the operation unit 215.

Thereafter, telephone 200 performs, for example, step ST88 based on the key operation of operation unit 215 by the user.
Then, a line disconnection process is performed, and in step ST89, a standby state is established. The fixed terminal device 100 includes a telephone 200
In response to the line disconnection process by
Then, the connection switch 109 is turned off to disconnect the line, and in step ST102, a standby state is set.

In the operation according to the control sequence diagram shown in FIG. 8, a call is made within a predetermined time from the previous remote operation, and a password is transmitted from telephone 200 to fixed terminal 100. Then, the remaining text message data is transmitted. That is, the user can omit the operation of the telephone 200 for requesting transmission of the remaining text message data.

In the above-described embodiment, the fixed terminal device 100 does not have a microphone as a transmitter and cannot make a normal call. However, the fixed terminal device 100 has a microphone and a calling unit and can make a call. The configuration may be as follows.

Further, when transmitting DTMF signal code in telephone 200, DTMF modulator 213 transmits DTMF signal code.
Although the F signal code is converted to a DTMF signal and transmitted to the line, if the base station has a means for generating a DTMF signal based on the received DTMF signal code, telephone 200 has DTMF modulator 213. You don't have to.
According to this, the configuration is simplified, signal deterioration is further reduced, and good character data transmission is expected.

[0085]

According to the present invention, a DTM is provided by a line.
Character message data sent in F signal format
In addition to writing in the data storage means in the form of a TMF signal code, when a transmission request command is sent, a DTMF signal code as predetermined character message data is read from the data storage means, and this DTMF signal code is converted into a DTMF signal. The data is converted and sent to the line, so that the storage capacity of the data storage means can be reduced, and the character message data can be easily confirmed by remote control.

Further, when writing a DTMF signal code as character message data of each case in the data storage means, a DTMF signal code indicating the current time is added and written, so that a character message based on the character message data of each case can be remotely stored. In the case of confirming by displaying on the display unit by operation or the like, the user can easily know the input time of each character message.

Further, DT as character message data
By writing the MF signal code to the data storage means for each case separated by the terminal code and writing the DTMF signal code indicating the number of character messages to the data storage means, the user can use the DTMF signal for remote operation.
By receiving the signal code, the number of text messages can be easily grasped, and transmission requests and deletion requests for text message data can be made efficiently.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a fixed terminal device as an embodiment.

FIG. 2 is a flowchart illustrating an operation of the fixed terminal device when receiving a call;

FIG. 3 is a diagram for explaining character message data and the like written in a RAM of a fixed terminal device.

FIG. 4 is a simplified portable telephone (PH) as an embodiment;
It is a block diagram which shows the structure of S).

FIG. 5 is a control sequence diagram for explaining an operation of a simplified mobile phone in a text message transmission mode.

FIG. 6 is a control sequence diagram for explaining an operation in a remote operation mode (request for transmission of predetermined message data) of the simplified mobile phone.

FIG. 7 is a control sequence diagram for explaining the operation of the simplified mobile phone in a remote operation mode (transmission request in which all cases are divided into the first five cases and the remaining cases).

FIG. 8 is a control sequence diagram for explaining another example of the operation of the simplified mobile phone in the remote operation mode (transmission request in which all cases are divided into the first five cases and the remaining cases).

[Explanation of symbols]

 Reference Signs List 100 fixed terminal device 101, 201 control unit 102, 215 operation unit 103, 216 display unit 104a, 104b terminal for telephone line connection 106 incoming call detection unit 107 line disconnection detection unit 108 2-wire to 4-wire conversion circuit 109 connection switch 112, 209 DTMF demodulator 113, 213 DTMF modulator 114, 219 ROM 115, 220 RAM 116 Clock section 200 Simple mobile phone 202 Transmitting / receiving antenna 203 Radio section 204 Digital modem section 205 TDMA processing section 206 Audio codec section 208 Speaker 211 Microphone 214 Changeover switch 217 Non-volatile memory 218 Ring output unit

────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] April 4, 1997

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claim 1

[Correction method] Change

[Correction contents]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] Claim 7

[Correction method] Change

[Correction contents]

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0005

[Correction method] Change

[Correction contents]

[0005]

SUMMARY OF THE INVENTION A terminal device according to the present invention detects line reception, automatically responds, and stores line control means for connecting a line with a partner and character message data. DTMF demodulation means for demodulating a DTMF signal transmitted by a line to obtain a DTMF signal code, and storing the DTMF signal code as character message data obtained by the DTMF demodulation means in the data storage means. A data write control unit for writing, a command detection unit for detecting a command transmitted by a line, and when a character message data transmission request command is detected by the command detection unit, a predetermined DTMF signal code is read from the data storage unit. Data read control means, and DTMF read from the data storage means. D is transmitted to the line as DTMF signals corresponding to No. code DTMF signal code or
And TMF sending means.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0008

[Correction method] Change

[Correction contents]

Further, a line is connected to the fixed terminal device by making a call from, for example, a portable terminal device for confirming a text message by remotely operating the fixed terminal device. After the line is connected, a password indicating that remote control is to be performed is transmitted from the portable terminal device to the line. When the fixed terminal device detects the above-mentioned password, the fixed terminal device is ready to detect the command transmitted by the line, and the DTMF indicating the number of text messages from the data storage means.
The signal code is read out, and this DTMF signal code is
It is transmitted to the line as an MF signal code or a corresponding DTMF signal. The portable terminal device obtains a DTMF signal code from a DTMF signal transmitted via a line, and displays the number of text messages on a display means such as a liquid crystal display using the DTMF signal code.

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0009

[Correction method] Change

[Correction contents]

Then, a character message data request command is transmitted from the portable terminal device to the line. This command and the above-mentioned password are transmitted to the line in the form of, for example, a DTMF signal. The fixed terminal device detects this command, reads out the DTMF signal code as character message data of the case designated by the command from the data storage means, and converts this DTMF signal code to the line as a DTMF signal code or a corresponding DTMF signal. Send out.
Thereby, the portable terminal device demodulates the DTMF signal transmitted through the line to obtain a DTMF signal code,
This DTMF signal code is written into the data storage means,
A character message (including time) based on the DTMF signal code is displayed on the display means automatically or in response to a user operation.

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Yoshito Takeshima 1-2-1-11 Ikenota, Taito-ku, Tokyo Aiwa Co., Ltd. (72) Inventor Akira Saito 1-2-11 Ikenota, Taito-ku, Tokyo Aiwa Inside the corporation

Claims (17)

[Claims] 1. A line control means for detecting an incoming call and automatically responding and connecting a line with a partner, a data storage means for storing character message data, DTMF demodulation means for demodulating a received DTMF signal to obtain a DTMF signal code; data writing control means for writing the DTMF signal code as the character message data obtained by the DTMF demodulation means into the data storage means; Command detection means for detecting a command transmitted by the command detection means; data reading control means for reading a predetermined DTMF signal code from the data storage means when a character message data transmission request command is detected by the command detection means; The DTMF signal code read from the data storage means is A terminal device comprising: DTMF transmitting means for transmitting to a line. 2. The terminal device according to claim 1, further comprising display means for displaying a text message corresponding to a DTMF signal code as said text message data obtained by said DTMF demodulation means. 3. The terminal device according to claim 1, wherein the character message data transmission request command is transmitted over the line in the form of a DTMF signal. 4. The terminal according to claim 1, wherein the data writing control means writes the DTMF signal code as the character message data to the data storage means for each case separated by a terminal code. apparatus. 5. A DTM indicating the number of text messages written in said data storage means in said data storage means.
The terminal device according to claim 4, wherein an F signal code is further written. 6. The data writing control means further comprising: a clock means for generating a DTMF signal code indicating current time data, wherein the data writing control means stores, in the data storage means, DTMF as the character message data of each of the cases.
6. The terminal device according to claim 4, wherein when writing the signal code, a DTMF signal code indicating a current time generated by the clock means is added and written. 7. After the line with the other party is connected,
2. The terminal device according to claim 1, further comprising a response message output means for generating a DTMF signal code as data of a response message prompting the input of a text message and transmitting the generated DTMF signal code to the line. 8. A password detecting means for detecting a password transmitted from the line and indicating that a remote operation is to be performed, wherein the command detecting means detects the password by the password detecting means. 2. The terminal device according to claim 1, wherein the terminal device detects a command sent by the line after the terminal device. 9. A password detection means for detecting a password transmitted from the line and indicating that remote control is to be performed, wherein the data read control means detects the password by the password detection means. 5. The terminal device according to claim 4, wherein immediately after the DTMF signal is read, a DTMF signal code indicating the number of character messages is read from the data storage means and supplied to the DTMF transmission means. 10. When the character message data transmission command requests transmission of a part of character message data among a plurality of character message data written in the data storage means, the data reading is performed. 5. The terminal device according to claim 4, wherein the control unit reads out only the character message data of the part from the data storage unit and supplies the character message data to the DTMF transmission unit. 11. The line is disconnected after the data read control unit reads out the part of the character message data from the data storage unit, and the line with the partner is disconnected by the line control unit within a predetermined time. When connected, the data reading means reads the remaining character message data from the data storage means and
11. The power supply to a TMF sending means.
A terminal device according to item 1. 12. A calling means for connecting a line with a specific other party, a data storage means for storing character message data, and a character string on the line after the line with the other party is connected. Command transmission means for transmitting a message data request command; DTMF demodulation means for demodulating a DTMF signal transmitted by the line to obtain a DTMF signal code; DTMF signal as the character message data obtained by the DTMF demodulation means A terminal device comprising: a data writing control unit that writes a code into the data storage unit; and a display unit that displays a character message based on the DTMF signal code written into the data storage unit. 13. The terminal device according to claim 12, wherein the character message data request command is transmitted to the line in the form of a DTMF signal. 14. The terminal according to claim 12, further comprising a password transmitting means for transmitting a password for performing a remote operation to the line after the line with the other party is connected. apparatus. 15. The character message data transmission request command requests transmission of some character message data of a plurality of character message data, or requests transmission of the remaining character message data. 13. The terminal device according to claim 12, wherein 16. When the character message data transmission request command requests transmission of character message data of a part of a plurality of character message data, the part of the character message data is transmitted by the line. 16. The terminal device according to claim 15, wherein the line is automatically disconnected after character message data is sent. 17. The terminal device according to claim 12, further comprising DTMF transmitting means for converting character message data into a DTMF signal and transmitting the DTMF signal to the line.